Hailey Bieber flashes a hint of skin in lace tank top and denim shorts as she goes shopping in NYC

Katie Holmes shows off her toned arms in a white tank top as she beats the summer heat in NYC

Hailey Bieber shows off her toned abs in crop top and low-waisted jeans paired with leather jacket

Hailey Bieber showcases her summer-ready abs in capri shorts... after a grueling workout in NYC